274 lines
7.7 KiB
JavaScript
274 lines
7.7 KiB
JavaScript
//= require jquery
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//= require jquery_ujs
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//= require jquery.autogrowtextarea
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//= require jquery.timers
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//= require augment
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//= require openlayers
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//= require i18n/translations
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//= require globals
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//= require browse
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//= require export
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//= require map
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//= require menu
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/*
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* Called as the user scrolls/zooms around to aniplate hrefs of the
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* view tab and various other links
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*/
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function updatelinks(lon,lat,zoom,layers,minlon,minlat,maxlon,maxlat,objtype,objid) {
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var decimals = Math.pow(10, Math.floor(zoom/3));
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var node;
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lat = Math.round(lat * decimals) / decimals;
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lon = Math.round(lon * decimals) / decimals;
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if (minlon) {
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minlon = Math.round(minlon * decimals) / decimals;
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minlat = Math.round(minlat * decimals) / decimals;
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maxlon = Math.round(maxlon * decimals) / decimals;
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maxlat = Math.round(maxlat * decimals) / decimals;
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}
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$(".geolink").each(function (index, link) {
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var args = getArgs(link.href);
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if ($(link).hasClass("llz")) {
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args.lat = lat;
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args.lon = lon;
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args.zoom = zoom;
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} else if (minlon && $(link).hasClass("bbox")) {
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args.bbox = minlon + "," + minlat + "," + maxlon + "," + maxlat;
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}
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if (layers && $(link).hasClass("layers")) {
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args.layers = layers;
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}
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if (objtype && $(link).hasClass("object")) {
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args[objtype] = objid;
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}
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var classes = $(link).attr("class").split(" ");
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$(classes).each(function (index, classname) {
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if (match = classname.match(/^minzoom([0-9]+)$/)) {
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var minzoom = match[1];
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var name = link.id.replace(/anchor$/, "");
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$(link).off("click.minzoom");
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if (zoom >= minzoom) {
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$(link).attr("title", I18n.t("javascripts.site." + name + "_tooltip"));
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$(link).removeClass("disabled");
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} else {
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$(link).on("click.minzoom", function () { alert(I18n.t("javascripts.site." + name + "_zoom_alert")); return false; });
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$(link).attr("title", I18n.t("javascripts.site." + name + "_disabled_tooltip"));
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$(link).addClass("disabled");
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}
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}
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});
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link.href = setArgs(link.href, args);
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});
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$("#shortlinkanchor").each(function () {
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var args = getArgs(this.href);
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var code = makeShortCode(lat, lon, zoom);
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var prefix = shortlinkPrefix();
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// Add ?{node,way,relation}=id to the arguments
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if (objtype && objid) {
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args[objtype] = objid;
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}
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// This is a hack to omit the default mapnik layer from the shortlink.
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if (layers && layers != "M") {
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args.layers = layers;
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}
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else {
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delete args.layers;
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}
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// Here we're assuming that all parameters but ?layers= and
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// ?{node,way,relation}= can be safely omitted from the shortlink
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// which encodes lat/lon/zoom. If new URL parameters are added to
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// the main slippy map this needs to be changed.
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if (args.layers || args[objtype]) {
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this.href = setArgs(prefix + "/go/" + code, args);
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} else {
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this.href = prefix + "/go/" + code;
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}
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});
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}
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/*
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* Get the URL prefix to use for a short link
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*/
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function shortlinkPrefix() {
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if (window.location.hostname.match(/^www\.openstreetmap\.org/i)) {
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return "http://osm.org";
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} else {
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return "";
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}
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}
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/*
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* Called to get the arguments from a URL as a hash.
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*/
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function getArgs(url) {
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var args = {};
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var querystart = url.indexOf("?");
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if (querystart >= 0) {
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var querystring = url.substring(querystart + 1);
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var queryitems = querystring.split("&");
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for (var i = 0; i < queryitems.length; i++) {
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if (match = queryitems[i].match(/^(.*)=(.*)$/)) {
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args[unescape(match[1])] = unescape(match[2]);
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} else {
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args[unescape(queryitems[i])] = null;
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}
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}
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}
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return args;
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}
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/*
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* Called to set the arguments on a URL from the given hash.
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*/
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function setArgs(url, args) {
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var queryitems = [];
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for (arg in args) {
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if (args[arg] == null) {
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queryitems.push(escape(arg));
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} else {
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queryitems.push(escape(arg) + "=" + escape(args[arg]));
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}
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}
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return url.replace(/\?.*$/, "") + "?" + queryitems.join("&");
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}
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/*
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* Called to interlace the bits in x and y, making a Morton code.
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*/
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function interlace(x, y) {
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x = (x | (x << 8)) & 0x00ff00ff;
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x = (x | (x << 4)) & 0x0f0f0f0f;
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x = (x | (x << 2)) & 0x33333333;
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x = (x | (x << 1)) & 0x55555555;
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y = (y | (y << 8)) & 0x00ff00ff;
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y = (y | (y << 4)) & 0x0f0f0f0f;
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y = (y | (y << 2)) & 0x33333333;
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y = (y | (y << 1)) & 0x55555555;
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return (x << 1) | y;
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}
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/*
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* Called to create a short code for the short link.
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*/
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function makeShortCode(lat, lon, zoom) {
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char_array = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_~";
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var x = Math.round((lon + 180.0) * ((1 << 30) / 90.0));
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var y = Math.round((lat + 90.0) * ((1 << 30) / 45.0));
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// JavaScript only has to keep 32 bits of bitwise operators, so this has to be
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// done in two parts. each of the parts c1/c2 has 30 bits of the total in it
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// and drops the last 4 bits of the full 64 bit Morton code.
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var str = "";
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var c1 = interlace(x >>> 17, y >>> 17), c2 = interlace((x >>> 2) & 0x7fff, (y >>> 2) & 0x7fff);
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for (var i = 0; i < Math.ceil((zoom + 8) / 3.0) && i < 5; ++i) {
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digit = (c1 >> (24 - 6 * i)) & 0x3f;
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str += char_array.charAt(digit);
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}
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for (var i = 5; i < Math.ceil((zoom + 8) / 3.0); ++i) {
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digit = (c2 >> (24 - 6 * (i - 5))) & 0x3f;
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str += char_array.charAt(digit);
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}
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for (var i = 0; i < ((zoom + 8) % 3); ++i) {
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str += "-";
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}
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return str;
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}
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/*
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* Click handler to switch a rich text control to preview mode
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*/
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function previewRichtext(event) {
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var editor = $(this).parents(".richtext_container").find("textarea");
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var preview = $(this).parents(".richtext_container").find(".richtext_preview");
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var width = editor.outerWidth() - preview.outerWidth() + preview.innerWidth();
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var minHeight = editor.outerHeight() - preview.outerHeight() + preview.innerHeight();
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if (preview.contents().length == 0) {
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preview.oneTime(500, "loading", function () {
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preview.addClass("loading");
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});
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preview.load(editor.attr("data-preview-url"), { text: editor.val() }, function () {
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preview.stopTime("loading");
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preview.removeClass("loading");
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});
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}
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editor.hide();
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preview.width(width);
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preview.css("min-height", minHeight + "px");
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preview.show();
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$(this).siblings(".richtext_doedit").prop("disabled", false);
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$(this).prop("disabled", true);
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event.preventDefault();
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}
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/*
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* Click handler to switch a rich text control to edit mode
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*/
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function editRichtext(event) {
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var editor = $(this).parents(".richtext_container").find("textarea");
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var preview = $(this).parents(".richtext_container").find(".richtext_preview");
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preview.hide();
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editor.show();
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$(this).siblings(".richtext_dopreview").prop("disabled", false);
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$(this).prop("disabled", true);
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event.preventDefault();
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}
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/*
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* Setup any rich text controls
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*/
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$(document).ready(function () {
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$(".richtext_preview").hide();
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$(".richtext_content textarea").change(function () {
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$(this).parents(".richtext_container").find(".richtext_preview").empty();
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});
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$(".richtext_doedit").prop("disabled", true);
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$(".richtext_dopreview").prop("disabled", false);
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$(".richtext_doedit").click(editRichtext);
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$(".richtext_dopreview").click(previewRichtext);
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});
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/*
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* Forms which have been cached by rails may have he wrong
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* authenticity token, so patch up any forms with the correct
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* token taken from the page header.
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*/
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$(document).ready(function () {
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var auth_token = $("meta[name=csrf-token]").attr("content");
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$("form input[name=authenticity_token]").val(auth_token);
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});
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/*
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* Enable auto expansion for all text areas
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*/
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$(document).ready(function () {
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$("textarea").autoGrow();
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});
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